Coulomb's Law
The electric force between two charged particles is described by Coulomb's Law:
F = k * (q1 * q2) / r²
Where:
* F is the electric force
* k is Coulomb's constant (approximately 8.98755 × 10⁹ N⋅m²/C²)
* q1 and q2 are the magnitudes of the charges
* r is the distance between the charges
Effect of Doubling One Charge
If you double the magnitude of one of the charges (let's say q1), the new force (F') will be:
F' = k * (2q1 * q2) / r²
Notice that the new force is simply twice the original force:
F' = 2 * (k * (q1 * q2) / r²) = 2F
Conclusion
If you double the magnitude of one of the charges, the electric force between the two charges will double.
